Pilates Machine Lying Running
- Target muscle
- —
- Equipment
- Body weight
- Body part
- Stretching
- Type
- Stretching
Pilates Machine Lying Running is a Reformer exercise performed on your back that targets the calves, hip flexors, and hamstrings through an alternating leg-press motion that mimics a running stride. The spring resistance challenges each leg independently while your core stabilizes the pelvis against the moving carriage. It builds lower-leg strength, improves hip flexor mobility, and trains leg coordination in a low-impact, supported position.
How to do the Pilates Machine Lying Running
- 1Lie on your back on the Reformer carriage with your head resting on the headrest and your arms relaxed at your sides.
- 2Place both feet flat against the foot bar with legs fully extended, toes pointing toward the ceiling at roughly hip-width apart.
- 3Press through both heels to confirm a stable starting position and neutral spine — your lower back should maintain a gentle natural curve, not pressed flat into the carriage.
- 4Raise both heels off the foot bar so you are on the balls of your feet, keeping the legs extended.
- 5Bend one knee and draw it toward your chest, allowing the carriage to glide toward the foot bar as that leg shortens.
- 6Simultaneously press the opposite heel down and away from you into the foot bar, extending that leg fully and pushing the carriage outward.
- 7Continue alternating in a smooth, controlled rhythm — one knee drives in as the other leg presses out — mimicking the cadence of a slow run.
- 8Keep your pelvis level and your lower back neutral throughout; do not let the hip of the bending leg hike upward.
- 9After completing the desired number of repetitions or duration, bend both knees, slide the carriage back to the stopper, and step off the Reformer.
Form tips
- Initiate each press from the heel, not the toes, to keep the calf and hamstring engaged rather than letting the ankle roll.
- Think of keeping your pelvis as a still bowl of water — the alternating leg motion should not tip it side to side.
- Control the speed of the carriage on both the press-out and the return; letting the spring yank the carriage back removes the eccentric work from your hip flexors.
- Keep your shoulders relaxed and your neck long — tension in the upper body signals that your core is not holding the load.
- Start with lighter spring resistance until the movement pattern feels smooth; increasing resistance too early encourages compensating with the lower back.
Common mistakes
- Letting the pelvis rock side to side: when one hip drops or lifts with each stride, the core is not stabilizing and the lumbar spine absorbs forces it should not.
- Pushing only through the toes: toe-dominant pressing shifts load away from the calf and hamstring and onto the anterior ankle, reducing the training stimulus and risking strain.
- Rushing the tempo: moving too fast turns the exercise into momentum work rather than muscular control, which defeats the coordination and strength goals of the movement.
- Flattening the lower back into the carriage: over-posteriorly tilting the pelvis to feel more stable shortens the hip flexors under load and can irritate the lumbar discs over time.
- Using spring resistance that is too heavy: excessive resistance causes the non-pressing leg to grip and substitute with the hip, pulling the pelvis out of alignment and reducing leg independence.
Frequently asked questions
What muscles does Pilates Machine Lying Running work?
The primary muscles worked are the calves (gastrocnemius and soleus) through the heel-press action, the hip flexors (iliopsoas) as each knee draws toward the chest, and the hamstrings to control the return of the pressing leg. Your deep core muscles — particularly the transverse abdominis — work continuously to keep the pelvis stable against the alternating spring load.
What spring resistance should I use for Lying Running?
Most practitioners start with one to two medium springs. The right resistance lets you maintain a smooth alternating rhythm without your pelvis rocking or your lower back flattening into the carriage. If you find yourself gripping or compensating anywhere in the torso, reduce the resistance and rebuild the pattern before adding load.
How many repetitions should I do?
A common approach is to count strides rather than single-leg reps — aim for 20 to 40 strides (10 to 20 per leg) as a working set. You can also run for a timed interval of 30 to 60 seconds. Because the exercise is low-impact and rhythmic, higher repetitions at a controlled pace are more effective than short sets at maximum resistance.
Is Pilates Machine Lying Running suitable for people with knee pain?
It can be appropriate because the movement is non-weight-bearing and the Reformer supports your body weight. However, the range of knee flexion should be comfortable — if drawing the knee toward your chest causes discomfort, shorten the range rather than pushing through pain. Anyone with an acute knee injury should consult a healthcare provider before performing this exercise.
What is the difference between Lying Running and Footwork on the Reformer?
Footwork exercises involve both legs pressing out and returning together from a stationary position, making them more of a bilateral leg-press drill. Lying Running is a unilateral alternating movement that adds a coordination and rhythm challenge and places greater demand on the hip flexors and core to control the asymmetrical spring load with each stride.
